Crystal Palace has submitted an appeal against their demotion from the Europa League to the Conference League with the Court of Arbitration for Sport.
The appeal is against Uefa, which issued the punishment, French club Lyon and Premier League rivals Nottingham Forest.
The Eagles were punished for breaching multi-club ownership rules as American businessman John Textor owns a stake in the club and is the majority owner of Lyon, who have also qualified for the Europa League.
Forest, who finished seventh in the Premier League last season, are expected replace FA Cup winners Palace in the Europa League should the punishment stand.
In their appeal Palace have requested an annulment of the decision by Uefa’s financial control body and readmission to the Europa League in place of either Forest or Lyon.
A decision is expected on or before August 11, with the Europa League group stage beginning on September 24.
The rules of European football’s governing body state that clubs owned, to a certain threshold of influence, by the same person or entity cannot compete in the same European competition.